.app-shell {
  display: grid;
  height: 100dvh;
  grid-template-columns: var(--rd-sidebar-width) minmax(0, 1fr);
  overflow: hidden;
}

.focused-reader-page .app-shell {
  grid-template-columns: minmax(0, 1fr) auto;
}

.focused-reader-page .app-sidebar {
  display: none !important;
}

.app-sidebar {
  position: relative;
  z-index: 20;
  min-width: 0;
  border-right: 1px solid var(--rd-line);
  background: color-mix(in srgb, var(--rd-surface) 90%, var(--rd-canvas));
}

.sidebar-inner {
  min-height: 100%;
  padding: 1.375rem 1rem 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 6px 24px;
  color: var(--rd-ink);
  text-decoration: none;
}

.brand:hover {
  color: var(--rd-ink);
}

.brand-mark {
  display: inline-grid;
  width: var(--rd-control-size-compact);
  height: var(--rd-control-size-compact);
  flex: 0 0 var(--rd-control-size-compact);
  place-items: center;
  border: 1px solid var(--rd-line-strong);
  border-radius: var(--rd-radius-md);
  background: var(--rd-surface);
  color: var(--rd-accent-deep);
  box-shadow: 0 4px 14px rgba(34, 55, 49, 0.05);
}

.brand-name {
  font-family: var(--rd-font-serif);
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.035em;
}

.sidebar-nav {
  display: flex;
  flex: 1;
  min-height: 0;
  flex-direction: column;
  gap: 1.25rem;
  overflow-y: auto;
}

.nav-group {
  display: grid;
  gap: 3px;
}

.nav-heading {
  padding: 0 11px 7px;
  color: var(--rd-faint);
  font-size: 0.66rem;
  font-weight: 750;
  letter-spacing: 0.09em;
  text-transform: uppercase;
}

.sidebar-nav .nav-link,
.sidebar-footer .nav-link {
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  gap: 8px;
  align-items: center;
  min-height: 38px;
  padding: 7px 10px;
  border-radius: var(--rd-radius-sm);
  color: var(--rd-muted);
  font-size: 0.79rem;
  font-weight: 570;
  text-decoration: none;
  transition: background-color 140ms ease, color 140ms ease;
}

.sidebar-nav .nav-link:hover,
.sidebar-footer .nav-link:hover {
  background: var(--rd-surface-soft);
  color: var(--rd-ink);
}

.sidebar-nav .nav-link.active,
.sidebar-footer .nav-link.active {
  background: var(--rd-accent-soft);
  color: var(--rd-accent-deep);
  font-weight: 680;
}

.sidebar-nav .nav-link i,
.sidebar-footer .nav-link i {
  font-size: 0.98rem;
}

.sidebar-nav .nav-link b {
  color: inherit;
  font-size: 0.67rem;
  font-weight: 650;
}

.sidebar-nav .nav-link-child {
  min-height: 30px;
  grid-template-columns: minmax(0, 1fr) auto;
  padding-top: 4px;
  padding-bottom: 4px;
  padding-left: 40px;
  font-size: 0.72rem;
}

.sidebar-footer {
  display: grid;
  gap: 12px;
  padding-top: 14px;
  border-top: 1px solid var(--rd-line);
}

.sidebar-footer small {
  padding: 0 10px;
  color: var(--rd-faint);
  font-family: var(--rd-font-serif);
  font-size: var(--rd-text-sm);
  font-style: italic;
}

.app-stage {
  min-width: 0;
  min-height: 0;
}

.app-topbar {
  position: relative;
  z-index: 30;
  display: flex;
  min-height: var(--rd-topbar-height);
  flex: 0 0 var(--rd-topbar-height);
  align-items: center;
  gap: 14px;
  padding: 0 18px;
  border-bottom: 1px solid var(--rd-line);
  background: color-mix(in srgb, var(--rd-surface) 92%, transparent);
  backdrop-filter: blur(18px);
}

.mobile-brand {
  color: var(--rd-ink);
  font-family: var(--rd-font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  text-decoration: none;
}

.topbar-quick-save,
.topbar-search {
  position: relative;
  width: min(100%, 32.5rem);
  margin: 0 auto;
}

.topbar-quick-save {
  display: grid;
  grid-template-columns: minmax(80px, 1fr) auto;
  gap: 8px;
  align-items: center;
}

.app-topbar:has(.topbar-search.show) .topbar-quick-save,
.app-topbar:has(.topbar-search.collapsing) .topbar-quick-save {
  display: none;
}

.topbar-search.collapsing {
  height: var(--rd-control-size) !important;
  transition: none;
}

.topbar-quick-save i,
.topbar-search i {
  position: absolute;
  top: 50%;
  left: 12px;
  color: var(--rd-faint);
  transform: translateY(-50%);
}

.topbar-quick-save input,
.topbar-search input {
  height: var(--rd-control-size);
  padding-left: var(--rd-control-size);
  background-color: var(--rd-canvas);
}

.reader-actions {
  gap: 4px;
}

.icon-button {
  display: inline-grid;
  width: var(--rd-control-size);
  height: var(--rd-control-size);
  flex: 0 0 var(--rd-control-size);
  place-items: center;
  padding: 0;
  border: 0;
  border-radius: 50%;
  outline: 0;
  background: transparent;
  color: var(--rd-muted);
  text-decoration: none;
  transition: background 140ms ease, color 140ms ease;
}

.icon-button:hover,
.icon-button:focus-visible,
.icon-button.active {
  background: var(--rd-surface-soft);
  color: var(--rd-ink);
}

.icon-button:focus-visible {
  box-shadow: 0 0 0 3px var(--rd-accent-soft);
}

.icon-button.active {
  color: var(--rd-gold);
}

.user-initial {
  display: grid;
  width: 29px;
  height: 29px;
  place-items: center;
  border-radius: 50%;
  background: var(--rd-accent-soft);
  color: var(--rd-accent-deep);
  font-size: var(--rd-text-sm);
  font-weight: 800;
}

.dropdown-menu {
  --bs-dropdown-bg: var(--rd-surface);
  --bs-dropdown-border-color: var(--rd-line);
  --bs-dropdown-border-radius: var(--rd-radius-md);
  --bs-dropdown-font-size: 0.78rem;
  --bs-dropdown-padding-x: 0.375rem;
  --bs-dropdown-padding-y: 0.375rem;
  box-shadow: var(--rd-shadow);
}

.dropdown-item {
  display: flex;
  gap: 9px;
  align-items: center;
  border-radius: var(--rd-radius-sm);
}

.account-menu {
  min-width: 220px;
}

.account-summary {
  display: grid;
  gap: 2px;
  padding: 9px 10px 7px;
}

.account-summary small {
  overflow: hidden;
  color: var(--rd-muted);
  text-overflow: ellipsis;
}

.message-stack {
  position: fixed;
  z-index: 1050;
  top: 74px;
  right: 18px;
  display: grid;
  width: min(24.375rem, calc(100vw - 2.25rem));
  gap: 8px;
}

.message-stack .alert {
  margin: 0;
  border: 1px solid var(--rd-line);
  border-radius: var(--rd-radius-md);
  box-shadow: var(--rd-shadow);
  font-size: 0.78rem;
}

.app-content {
  min-width: 0;
  min-height: 0;
  flex: 1;
  overflow: auto;
}